Measurements of K, Rb, U, Sr and Pb in diamonds containing inclusions

H. J. Welke; H. L. Allsopp; J. W. Harris

doi:10.1038/252035a0

Measurements of K, Rb, U, Sr and Pb in diamonds containing inclusions

H. J. Welke^*, H. L. Allsopp, J. W. Harris

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

KNOWLEDGE of the Pb and Sr isotopic compositions of syngenetic inclusions in diamonds is important for several reasons. As diamonds probably crystallised at depths of more than 100 km, the isotopic data may provide constraints on the mode of the geochemical evolution of the Earth. It may also be possible to test assumed U/Pb ratios (U/Pb=μ) for the mantle and to estimate the age of particular diamonds. Diamonds are particularly appropriate for these studies because, in contrast to kimberlites and their associated nodules, any contamination by crustal material can be overcome by washing in acid.

Original language	English
Pages (from-to)	35-37
Number of pages	3
Journal	Nature
Volume	252
Issue number	5478
DOIs	https://doi.org/10.1038/252035a0
Publication status	Published - 1974
Externally published	Yes

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abstract = "KNOWLEDGE of the Pb and Sr isotopic compositions of syngenetic inclusions in diamonds is important for several reasons. As diamonds probably crystallised at depths of more than 100 km, the isotopic data may provide constraints on the mode of the geochemical evolution of the Earth. It may also be possible to test assumed U/Pb ratios (U/Pb=μ) for the mantle and to estimate the age of particular diamonds. Diamonds are particularly appropriate for these studies because, in contrast to kimberlites and their associated nodules, any contamination by crustal material can be overcome by washing in acid.",

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AU - Allsopp, H. L.

AU - Harris, J. W.

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AB - KNOWLEDGE of the Pb and Sr isotopic compositions of syngenetic inclusions in diamonds is important for several reasons. As diamonds probably crystallised at depths of more than 100 km, the isotopic data may provide constraints on the mode of the geochemical evolution of the Earth. It may also be possible to test assumed U/Pb ratios (U/Pb=μ) for the mantle and to estimate the age of particular diamonds. Diamonds are particularly appropriate for these studies because, in contrast to kimberlites and their associated nodules, any contamination by crustal material can be overcome by washing in acid.

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Measurements of K, Rb, U, Sr and Pb in diamonds containing inclusions

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